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    <title>Document</title>
    <script src="36-09-手写Promise-then方法-不传回调函数处理.js"></script>
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    <script>
        let p = new Promise((resolve,reject)=>{
           resolve('ok');
            // reject('error');
        });

        // let p2 = p.then(undefined,undefined);
        // let p2 = p.then();

        p.then()
        .then(val=>{
            console.log(val);
        })

        // console.log(p2);

        

     


       

    </script>
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